Compound Interest Calculator

Estimate investment growth with contributions and annual compounding.

Plan

Your Contributions

$
One-time starting amount.
$
Added at end of month.

Time Horizon

Expected Returns

%

Growth

Ending Balance
$0.00
Total Contributions
$0.00
Total Interest
$0.00
Yearly Breakdown
YearContributedInterestEnd Balance

User Guide

How to Use the Calculator

  1. Initial Investment: Enter the starting amount of your investment.
  2. Contribution Amount: Input the amount you plan to add regularly (e.g., monthly).
  3. Contribution Frequency: Choose whether you will make contributions monthly or annually.
  4. Contribution Timing: Select whether contributions are made at the beginning or end of the period.
  5. Length of Time: Set the number of years you plan to invest.
  6. Estimated Annual Return: Enter the expected annual interest rate for your investment.

The charts and summary figures will update automatically as you change the values.

Understanding the Results

  • Ending Balance: The total value of your investment at the end of the time period.
  • Total Contributions: The total amount of money you put into the investment.
  • Total Interest: The total amount of interest earned.
  • Growth Chart: Visualizes how your investment grows over time, showing the principal and the interest earned.
  • Yearly Breakdown: A table showing the contributions, interest, and end balance for each year.

Disclaimer

Calculations are estimates and assume a constant annual rate with annual compounding. This tool is for informational purposes only and is not financial advice.